Kuraray Co., Ltd.

Masahiro Takafuji

Masaki Kato

Osamu Kazeto

Yoko Mori

Takashi Nerio

Takanori Isozaki

Satoru Fujita

Akio Nishimi

The present disclosure relates to a water-soluble film with polyvinyl alcohol having a polymerization degree of 100 to 3,000 and a polyhydric alcohol plasticizer.

Water-soluble film, manufacturing method, and package

The present disclosure relates to a water-soluble film comprising polyvinyl alcohol having a polymerization degree of 100 to 3,000 and a polyhydric alcohol plasticizer.

Disclosed is a mold release film that is to be placed between a stock solution that serves as a raw material for artificial marble and a shaping apparatus when the stock solution is fed to the shaping apparatus, and then solidified and molded.

Poly(vinyl alcohol) mold release film for artificial marble molding use, and method for producing artificial marble using same

Provided are a single-layered hydraulic transfer printing base film, including 1.5 to 15 parts by mass of a plate or needle filler with an average particle diameter of from 2 to 14 &#x3bc;m and an aspect ratio of from 4 to 60 based on 100 parts by mass of polyvinyl alcohol and a method of producing a hydraulic transfer printing base film, including forming a film using a liquid containing 1.5 to 15 parts by mass of a plate or needle filler with an average particle diameter of from 2 to 14 &#x3bc;m and an aspect ratio of from 4 to 60 based on 100 parts by mass of polyvinyl alcohol. A hydraulic transfer printing base film that is not easily broken when fed from a roll and a method of producing the base film are thus provided.

Hydraulic transfer printing base film

A modified PVA that enables formation of a film superior in cold water solubility, mechanical strength, and chemical resistance is provided. The modified PVA comprises a monomer unit represented by formula (I), and a structural unit represented by formula (II): wherein: a content of the monomer unit (I) is from 0.05 mol % to 10 mol %, and a content of the structural unit (II) is from 0.001 mol % to 0.5 mol % with respect to the total monomer units in the modified PVA; a viscosity average degree of polymerization is from 300 to 3,000; and a degree of saponification is from 82 mol % to 99.5 mol %. In the formula (I): Rrepresents a hydrogen atom, or a methyl group; and Rrepresents &#x2014;R&#x2014;SOX, &#x2014;R&#x2014;N(R)Cl, or a hydrogen atom, Rrepresenting an alkanediyl group, Xrepresenting a hydrogen atom, a metal atom, or an ammonium group, and Rrepresenting an alkyl group.

Modified polyvinyl alcohol, resin composition, and film

Modified polyvinyl alhohol, resin composition, and film

A resin composition that enables formation of a film superior in cold water solubility, mechanical strength, and chemical resistance is provided. The resin composition comprises a modified PVA comprising a monomer unit represented by formula (I), and an amine compound represented by formula (II): a content of the amine compound with respect to 100 parts by mass of the modified PVA being from 0.01 parts by mass to 1 part by mass. In the formula (I), Rrepresents a hydrogen atom, or an alkyl group having 1 to 8 carbon atoms; and Rrepresents &#x2014;R&#x2014;SOX, &#x2014;R&#x2014;N(R)Cl, or a hydrogen atom, Rrepresenting an alkanediyl group having 1 to 10 carbon atoms, Xrepresenting a hydrogen atom, a metal atom, or an ammonium group, and Rrepresenting a linear or branched alkyl group having 1 to 5 carbon atoms. In the formula (II), Rrepresents &#x2014;R'&#x2014;SOX&#x2032;, &#x2014;R&#x2032;&#x2014;N(R&#x2032;)Cl, or a hydrogen atom.

Resin composition and film

[Problem] To provide a film that has excellent water solubility which changes little over time even when the film touches a chemical, a package and a liquid transfer printing film each using the film and a liquid transfer printing method using the liquid transfer printing film. [Means for Resolution] A film containing a hydroxymethyl group-containing vinyl alcohol-based polymer containing a vinyl alcohol unit and a unit structure represented by the following formula (1), a package and a liquid transfer printing film each using the film and a liquid transfer printing method using the liquid transfer printing film. 

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Kurashiki, Japan

Masahiro Takafuji